The Last Hour would not come unless the Euphrates would uncover a treasure of gold, so he who finds it should not take anything out of that.
قَالَ رَسُولُ اللَّهِ ﷺ يُوشِكُ الْفُرَاتُ أَنْ يَحْسِرَ عَنْ كَنْزٍ مِنْ ذَهَبٍ فَمَنْ حَضَرَهُ فَلاَ يَأْخُذْ مِنْهُ شَيْئًا